171161069 has 2 divisors, whose sum is σ = 171161070. Its totient is φ = 171161068.

The previous prime is 171161047. The next prime is 171161077. The reversal of 171161069 is 960161171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157000900 + 14160169 = 12530^2 + 3763^2 .

It is a cyclic number.

It is not a de Polignac number, because 171161069 - 2²⁰ = 170112493 is a prime.

It is a super-2 number, since 2×171161069² = 58592223082445522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171161099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85580534 + 85580535.

It is an arithmetic number, because the mean of its divisors is an integer number (85580535).

Almost surely, 2^171161069 is an apocalyptic number.

It is an amenable number.

171161069 is a deficient number, since it is larger than the sum of its proper divisors (1).

171161069 is an equidigital number, since it uses as much as digits as its factorization.

171161069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 171161069 is about 13082.8540082048. The cubic root of 171161069 is about 555.2241272091.

The spelling of 171161069 in words is "one hundred seventy-one million, one hundred sixty-one thousand, sixty-nine".